Flanged pipe.



IMO-854,869} PATENTED MAY 28, 1907.

L. H. BRINKMAN. FLANGBD PIPE.

APPLICATION FILED JULY 5, 1906.

22 Fig.4. 21

2 2 .Wflznesses a F1 5. Inventor citizen of the United States, residingat Hartford, in the'county of Hartford and State of 1 the face of theconnecting collars by which.

Improvement in Flanged Pipes, of which the to present contactingsurfaces at right angles to the axis of the emng the flange.

cylindrical form, said rolls 7 and 8 being ra- NITE AT PATE OFFICE.

WHITLOCK COIL PIPE COMPANY, .OF

WEST' HARTEQBD, con

NECTICUT, A CORPORATION or CONNECTICUT.

' FLANGED PIPE. i

Specification of Letters Patent.

,Paten'tedIaySBS.19 01";-

L Application filed July 5,1906. Serial No. 824,818-

To all when 11 it may concern: I

Be it known that I, Lours H. Bnmmmma Connecticut, haveinventeda new anduseful following is a specification accompanied by drawings, forming apart of the same and illustrating the nature'and character of my presentimprovement, in whi ch. Y

Figure 1 represents the first step employed in producing a flange on theend of a pipe according to my invention, and consisting in producing asemicircular ex ans'ion by which a section of the ipe near t e end isreduced in thickness. Fig. 2 represents the method of compressing thesemicircular expansion to form a flanged end. Fig. 3 isa diagrammaticview representing the plane upon which the flange is faced to correspondwith the flanged ends of connected pipe are united. Fig. 4 represents acompleted, flanged pipe with a co lar applied thereto, and Fig. 5represents a modificatlon in the mechanism for com ressing the flange. I

y present invention relates to that class of flanged pipes in whichadoubled flange is formed upon the end of a pipe, and the object of myinvention is to rovide a flange doubled upon itself and which can befaced pipe without unduly weak- In carrying out my invention I firstexpand the pipe, which has preferably been previously heated by anysuitable means, 4 such as that illustrated Fig. 1, by which I form asemicircular expansion or beam' around the pi e and near one end. Iaccomplish this res t in'the present instance by securely holdingthepipe 1 in clam s 2, 2-, and subjecting the end of the pipe to t eexpanding actlon of. a roll 3, having a semicircular peripheryand-carried upon a stud held in a lo 4, capable of a radial movement ina' rotatin face plate 5 by means of a screw 0 erated y a hand wheel 6.To prevent t e distortion of the pipe I insert within it rolls, such as7 and 8, carried by the face plate 5 and in proper position to contactwith the in-, terior of the pipe and serve to preserve its outward, themetal being dially adjustedin the face plate by means of screws and handwheels 9 and 10.-

As rotary motion is given to the face plate 5 by means of a belt pulley1 1 the expanding roll 3 is gradually pressed against theinterior of thepipe by moving. the block 4 outward by means of the hand wheel 6,causing a semicircular bead 12 to be formed in the pipe at'such adistance from the end of the pipe that the inturned edge 13 willcoincide with the interior of the. pipe. The expansion of the pipe toform a semicircular bead gradually reduces the thickness of the metal inthe head, the reduction in thickness corresponding to'the amount ofexpansion, and gradually increasing from the periphery of the pipethinnest at the point 14- or at the outside of the bead, and graduallyincreasing in thickness in each direction, the edge 13 remainingsubstantially the same thickness as the original thickness of the ipe.After expanding the pipe as described I next compress the semi bead byapplying pressure to the edge 13 by means of a compressing roll 15 inorder to crowd the two sides of the semicircular beadtogether, as shownin Fig. 2, the resure against the flange exerted by the r0 15 beingreceived by a collar or clamp 2 surroundin the pipe and abutting againstthe rear si e of the flange.

The face 16 of the clamp 2 is preferably at right angles to the axis ofthe pipe in order to bring the rear side of the flange in a plane atright angles to the axis of the pi to receive a coupling collar 17, Fig.4,. TE: periphery of the compressing roll 15 is. tapered, as shown inFlg. 2, the outer end snfiiciently larger than the inner end to compensate for the difference in thickness between the outer and inner edgesof the com ressed flan e, said difference in thickness being due to t ereduction in thickness jof themetal caused by the expansion of thesemicircular bead 12. By the compression of the as shown in Fig. 2, therear side of the is crowded against the wall of the clamp 2 and broughtinto a plane at right angles with the axis of the pipe, while theOpposite face 18 of the flange is at an oblique angle to the axis of thepipe. At the next operation I face the oblique side 18 of the flangeupon a plane at right angles to the axis of the pipe,

A .as indicated by the line 1919,

' the flange, said '&

Fig. 3. Iremove a sufficient amount of metal as at 20,

Fig. 3, from the thick edge 13 of the flange to provide a sufficientbearing surface lying in a plane at right anglesto the axis of the pipeand forming the contacting surface 21 of contactin surface-21 beingparallel with a face 22 of t e clamping collar 17. When two adjacentpipes are clamped together by collars 17 the pressure u on thecontacting surface 21 is received by t e base of the flange 23, Fig. 3,where the metal has not been materially reduced in thickness,-

thereby iving greater strength to the 'eint. As the e ge .of the pipe,sufficient metal is provided for as shown at 15,

- do not wish to confine myself to any particular apparatus or specificmethod of manufacture as I amaware that these may be changed withoutdeparting from the scope of my invention.

I claim,

1. As an article of manufacture, a pipe having at its end a flangeformed by turning the ipe outwardly and then inwardly upon itself toform a double flange with the metal of the outwardly and inwardly turnedmembers of the flange gradually reduced in thickthickness ofpthe outeredge of t 13 remains the original thic ess' edge than at its inner edceases ness toward the outer edge of the flange, with the outer side ofthe outwardly turned member in a plane at substantially right angles tothe axis of the pipe, and the outer side of the inwardly turned memberat an oblique angle to the axis of the pipe, with a portion of theinwardly turned member of the flange faced in a plane at right angles tothe axis of the pipe to form a contacting surface.

2. As an article of manufacture, a pipe having at its end an integralexterior flange, consisting of outwardly and inwardly turned membersforming a double flan e having the e flange less than its inner edge andhaving one side of the flange at substantially right angles to the axisof the pipe, and having the outer ortion of op osite face oblique to theaxis of t 1e pipe, and tihe inner portion at right angles to the axis ofthe pipe.

- 3. As. an article of manufacture, a pipe having at its end an exteriorinte ral flange composed of outwardly and inwar l y turned memberscompressed together, with the thickness of each member less at its outere, and having the outer side of the outwar ly turned membersubstantially at right angles to the axis of the pipe, and having theinner edge of the inwardly turned member faced to form a contactingsurface at right angles with the axis of the i Dated this 2nd day ofJuly, 1906.

LOUIS H. BRINKMAN.

Witnesses:

C. A. LILLIE, H. E. WILCOX.

